<script setup>
import { Edit, Delete } from "@element-plus/icons-vue";
import { QuillEditor } from "@vueup/vue-quill";
import "@vueup/vue-quill/dist/vue-quill.snow.css";
import { Plus } from "@element-plus/icons-vue";
import { ref } from "vue";
import { useTokenStore } from "@/stores/token.js";
import {ElMessage} from "element-plus"
import {
  articleCategoryListService,
  articleAddService,
  articlePageService,
  articleDetailService,
  articleUpdateService,
  articleDeleteService,
} from "@//api/article.js";
//获取token
const tokenStore = useTokenStore();
//文章分类数据模型
const categorys = ref([]);

//用户搜索时选中的分类id
const categoryId = ref("");

//用户搜索时选中的发布状态
const state = ref("");

//控制抽屉是否显示
const visibleDrawer = ref(false);

//文章列表数据模型
const articles = ref([]);

//分页条数据模型
const pageNum = ref(1); //当前页
const total = ref(20); //总条数
const pageSize = ref(10); //每页条数
const type=ref('新增文章')
//添加表单数据模型
const articleModel = ref({
  title: "",
  categoryId: "",
  coverImg: "",
  content: "",
  state: "",
});
//当每页条数发生了变化，调用此函数
const onSizeChange = (size) => {
  pageSize.value = size;
};
//当前页码发生变化，调用此函数
const onCurrentChange = (num) => {
  pageNum.value = num;
};
//获取所有文章分类数据
const getAllCategory = async () => {
  let res = await articleCategoryListService();
  categorys.value = res.data;
};
//获取文章列表数据
const articleList = async () => {
  let res = await articlePageService({
    pageNum: pageNum.value,
    pageSize: pageSize.value,
    categoryId: categoryId.value ? categoryId.value : null /* 有值才传递 */,
    state: state.value ? state.value : null,
  });
  //渲染视图
  articles.value = res.data.items;
  total.value = res.data.total;
  //处理数据 使其分类变为文章分类名称
  for (let i = 0; i < articles.value.length; i++) {
    let article = articles.value[i]; //获取当前文章
    for (let j = 0; j < categorys.value.length; j++) {
      if (article.categoryId == categorys.value[j].id) {
        article.categoryName = categorys.value[j].categoryName;
      }
    }
  }
};
const addArticlebutton=()=>{
  articleModel.value.content=null
  console.log(articleModel.value.content)
  visibleDrawer.value = true;
  type.value = '新增文章'
  articleModel.value={}
}
//新增文章
const addArticle = async (state) => {
  articleModel.value.state=state
  let res=await articleAddService(articleModel.value);
  if(res.code==0){
    articleModel.value={}//清空数据
    ElMessage.success('添加成功')
  }else{
    ElMessage.error(res.msg)
  }
  visibleDrawer.value=false
  articleList();//刷新页面
};
//更新前回显调用
const updateArticleInfo = async (row) => {
   visibleDrawer.value=true
   articleModel.value = row;
};
//更新文章信息
const updateArticle = async (state) => {
  articleModel.value.state = state;
  let res=await articleUpdateService(articleModel.value);
  if(res.code==0){
    ElMessage.success('更新成功')
    articleModel.value={}//清除数据
    visibleDrawer.value=false
    articleList();//显示页面
  }else{
    ElMessage.error(res.msg)
  }
};
//删除文章
const deleteArticle = async (id) => {
  console.log(id);
  let res = await articleDeleteService(id);
  if (res.code == 0) {
    ElMessage.success("删除成功");
  } else {
    ElMessage.error(res.msg);
  }
  articleList(); //刷新页面
};
//文件上传后的处理
const uploadFile = (img) => {
  if (img && img.data)
    //img就是后台响应的数据，格式为：{code:状态码，message：提示信息，data: 图片的存储地址}
    articleModel.value.coverImg = img.data;
  console.log(img.data);
};
//顺序不能乱 先查分类数据再查文章数据
getAllCategory();
articleList();
</script>
<template>
  <el-card class="page-container">
    <template #header>
      <div class="header">
        <span>文章管理</span>
        <div class="extra">
          <el-button type="primary" @click="addArticlebutton()"
            >添加文章</el-button
          >
        </div>
      </div>
    </template>
    <!-- 搜索表单 -->
    <el-form inline>
      <el-form-item label="文章分类：">
        <el-select placeholder="请选择" v-model="categoryId">
          <el-option
            v-for="c in categorys"
            :key="c.id"
            :label="c.categoryName"
            :value="c.id"
          >
          </el-option>
        </el-select>
      </el-form-item>

      <el-form-item label="发布状态：">
        <el-select placeholder="请选择" v-model="state">
          <el-option label="已发布" value="已发布"></el-option>
          <el-option label="草稿" value="草稿"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="articleList()">搜索</el-button>
        <el-button
          @click="
            categoryId = '';
            state = '';
          "
          >重置</el-button
        >
      </el-form-item>
    </el-form>
    <!-- 文章列表 -->
    <el-table :data="articles" style="width: 100%">
      <el-table-column
        label="文章标题"
        width="400"
        prop="title"
      ></el-table-column>
      <el-table-column label="分类" prop="categoryName"></el-table-column>
      <el-table-column label="发表时间" prop="createTime"> </el-table-column>
      <el-table-column label="状态" prop="state"></el-table-column>
      <el-table-column label="操作" width="100">
        <template #default="{ row }">
          <el-button :icon="Edit" circle plain type="primary" @click="updateArticleInfo(row);type = '更新文章'"></el-button>
          <el-button :icon="Delete" circle plain type="danger" @click="deleteArticle(row.id)"></el-button>
        </template>
      </el-table-column>
      <template #empty>
        <el-empty description="没有数据" />
      </template>
    </el-table>
    <!-- 分页条 -->
    <el-pagination
      v-model:current-page="pageNum"
      v-model:page-size="pageSize"
      :page-sizes="[3, 5, 10, 15]"
      layout="jumper, total, sizes, prev, pager, next"
      background
      :total="total"
      @size-change="onSizeChange"
      @current-change="onCurrentChange"
      style="margin-top: 20px; justify-content: flex-end"
    />
  </el-card>
  <!-- 抽屉 -->
  <el-drawer
    v-model="visibleDrawer"
    :title=type
    direction="rtl"
    size="50%"
  >
    <!-- 添加文章表单 -->
    <el-form :model="articleModel" label-width="100px">
      <el-form-item label="文章标题">
        <el-input
          v-model="articleModel.title"
          placeholder="请输入标题"
        ></el-input>
      </el-form-item>
      <el-form-item label="文章分类">
        <el-select placeholder="请选择" v-model="articleModel.categoryId">
          <el-option
            v-for="c in categorys"
            :key="c.id"
            :label="c.categoryName"
            :value="c.id"
          >
          </el-option>
        </el-select>
      </el-form-item>
      <el-form-item label="文章封面">
        <!-- auto-upload:是否自动上传
        action: 服务器接口路径
        name: 上传的文件字段名
        headers: 设置上传的请求头
        on-success: 上传成功的回调函数-->
        <el-upload
          class="avatar-uploader"
          :auto-upload="true"
          :show-file-list="false"
          action="/api/upload"
          name="file"
          :headers="{ Authorization: tokenStore.token }"
          :on-success="uploadFile"
        >
          <img
            v-if="articleModel.coverImg"
            :src="articleModel.coverImg"
            class="avatar"
          />
          <el-icon v-else class="avatar-uploader-icon">
            <Plus />
          </el-icon>
        </el-upload>
      </el-form-item>
      <el-form-item label="文章内容">
        <div class="editor">
          <quill-editor
            theme="snow"
            v-model:content="articleModel.content"
            contentType="html"
          >
          </quill-editor>
        </div>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="type==='新增文章'?addArticle('发布'):updateArticle('发布')">发布</el-button>
        <el-button type="info" @click="type==='新增文章'?addArticle('草稿'):updateArticle('草稿')">草稿</el-button>
      </el-form-item>
    </el-form>
  </el-drawer>
</template>
<style lang="scss" scoped>
.page-container {
  min-height: 100%;
  box-sizing: border-box;

  .header {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
}
/* 抽屉样式 */
.avatar-uploader {
  :deep() {
    .avatar {
      width: 178px;
      height: 178px;
      display: block;
    }

    .el-upload {
      border: 1px dashed var(--el-border-color);
      border-radius: 6px;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: var(--el-transition-duration-fast);
    }

    .el-upload:hover {
      border-color: var(--el-color-primary);
    }

    .el-icon.avatar-uploader-icon {
      font-size: 28px;
      color: #8c939d;
      width: 178px;
      height: 178px;
      text-align: center;
    }
  }
}
.editor {
  width: 100%;
  :deep(.ql-editor) {
    min-height: 200px;
  }
}
</style>